A class of arthropod animals commonly known as millipedes, characterized by having two pairs of legs attached to each body segment.
From Greek diplo- (double) and pous (foot), with the Latin feminine ending -a. The taxonomic class name was formalized in the 18th century when scientists recognized this anatomical distinction as a key classification feature.
Millipedes are ancient survivors—fossils show they were crawling around 300 million years ago, even before dinosaurs! They're detritivores that recycle dead plant material, making them essential underground engineers that few people appreciate.
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